Vehicle Segment:
Compact SUV, Off-Road Vehicle
Target Audience:
Off-road enthusiasts, Jeep owners seeking DIY repair and maintenance information.
Key Competitors:
Toyota Tacoma, Suzuki Samurai (though TJ is more modern), Land Rover Defender (different segment but similar ethos).
Vehicle Identity:
Iconic off-road capability, removable doors and roof, rugged construction, strong aftermarket support.
Manual Value Proposition:
Provides mechanics and owners with the authoritative information needed to maintain and repair their Jeep Wrangler TJ, ensuring longevity and optimal performance.
Powertrain:
Engine mechanical, fuel system, lubrication system, cooling system, exhaust system, ignition system, engine performance diagnostics, emissions control
Transmission Drivetrain:
Manual transmission (AX-5, NV3550), Automatic transmission (30/42RH), Transfer case (231J), Drive shafts, Axles (Dana 30 front, Dana 35 rear), Clutch system
Suspension Steering:
Front suspension (coil springs, solid axle, control arms), Rear suspension (leaf springs, solid axle), Steering system (power steering, steering gearbox), Wheel alignment specifications
Brakes:
Front disc brakes, Rear drum brakes (standard on some models), ABS system (where applicable), Brake hydraulic system, Parking brake
Electrical Electronics:
Battery, starting system, charging system, ignition system, lighting system, instrument cluster, wiring diagrams, fuse and relay identification, power windows/locks (if equipped), basic body control modules
Body Chassis:
Body panels, doors, hood, tailgate, interior trim, seats, convertible top system, frame specifications, chassis components
Heating Ventilation Ac:
HVAC system operation, components, diagnosis, and repair
Emissions Control:
Emission control devices, diagnostic procedures, evaporative emission system
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, brake inspections, tire rotations
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, fault code interpretation (OBD-II), circuit testing
Repair:
Component removal and installation, internal component repair, overhaul procedures, assembly and disassembly instructions
Specifications:
Torque specifications, clearances, fluid capacities, electrical data, diagnostic parameters
Installation:
Instructions for certain accessory installations or component replacements (e.g., brakes, clutch)
Depth:
Comprehensive, covering routine maintenance to major component overhauls and detailed diagnostics.
Diagnostic Capabilities:
Includes detailed troubleshooting trees, wiring diagrams, and component testing procedures, supporting professional-level diagnostics.
Engine Code:
4.0L Inline 6-Cylinder (OHV)
Engine Displacement:
3957 cc (242 cubic inches)
Engine Type:
Naturally Aspirated, Overhead Valve (OHV), Cast Iron Block, Aluminum Cylinder Head
Bore X Stroke:
3.88 in x 3.41 in (98.5 mm x 86.6 mm)
Compression Ratio:
8.75:1 (typical)
Horsepower:
182 hp @ 4,600 rpm (approx.)
Torque:
220 lb-ft @ 3,200 rpm (approx.)
Fuel Type:
Unleaded Gasoline
Induction:
Multi-Point Fuel Injection (MPI)
Fuel Pump Pressure:
31-39 PSI (typical)
Optional Engine:
2.5L Inline 4-Cylinder (AMC 150) - (Less common for 96-99 TJ, more prominent in earlier YJ/later TJ models, but manual may cover diagnostics for it if present in early TJ run).
Optional Engine Specs:
118 hp, 135 lb-ft torque (for 2.5L)
Transmission Type Standard:
5-Speed Manual Transmission (AX-5)
Transmission Type Optional:
4-Speed Automatic Transmission (30/42RH)
Transfer Case:
NV231J Command-Trac (part-time, chain-driven, 2.72:1 low range)
Axle Ratio:
Commonly 3.73:1 or 4.10:1 for off-road variants, 3.07:1 or 3.73:1 for standard models.
Manual Transmission Fluid:
Mopar Manual Transmission Lubricant (MS-9224) or equivalent, typically GL-3 or GL-4, viscosity 75W-90 or 80W-90.
Automatic Transmission Fluid:
Mopar ATF+4 (MS-9602) or equivalent Dexron III/Mercon.
Transfer Case Fluid:
Mopar NV231 Transfer Case Lubricant or equivalent Dexron III/Mercon.
Wheelbase:
93.4 inches (2372 mm)
Length:
151.5 inches (3848 mm)
Width:
66.5 inches (1689 mm)
Height:
71.2 inches (1808 mm) (soft top)
Ground Clearance:
Approx. 8.5-10.5 inches (depending on tire size and suspension)
Curb Weight:
Approx. 3,200 - 3,500 lbs (1451 - 1588 kg)
Gross Vehicle Weight Rating:
Approx. 4,500 lbs (2041 kg)
Cargo Volume Behind Rear Seat:
Approx. 28.6 cu ft (0.81 m³)
Cargo Volume With Rear Seat Folded:
Approx. 67.0 cu ft (1.89 m³)
NHTSA Rollover Rating:
3-star (typical for this era of SUVs, especially with a high center of gravity)
IIHS Ratings:
Varies by year and specific test, generally considered good for its class in frontal impact for the era, but prone to rollovers in extreme maneuvers.
Anti Lock Brakes:
Optional/Standard depending on trim and year (typically 4-wheel ABS on later models within this range).
Traction Control:
Generally not available in this generation.
Airbags:
Driver and Passenger airbags (standard).
Seat Belts:
3-point front seat belts, lap belts in rear.
Oil Change Interval:
Every 3,000-5,000 miles (4,800-8,000 km) or 6 months, whichever comes first (depending on driving conditions and oil type used).
Air Filter Replacement:
Every 12,000-15,000 miles (19,000-24,000 km) or annually.
Spark Plug Replacement:
Every 30,000-50,000 miles (48,000-80,000 km) for standard plugs, potentially longer for platinum/iridium.
Coolant Flush:
Every 30,000-50,000 miles (48,000-80,000 km) or 2-3 years.
Engine Oil Type:
SAE 10W-30 API SJ or higher (for 4.0L engine), consult manual for exact specification.
Engine Oil Capacity:
6 US quarts (5.7 liters) with filter change (for 4.0L).
Coolant Type:
Ethylene Glycol based, Mopar Antifreeze/Coolant (MS-7170) or equivalent (typically green).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Power Steering Fluid:
Mopar Power Steering Fluid or equivalent Dexron III/Mercon.
Engine Common Problems:
Cracked cylinder heads (less common on 4.0L than some other Chrysler engines of the era, but possible), oil filter adapter seal leaks, exhaust manifold cracks.
Transmission Common Problems:
Wear in manual transmission synchros, automatic transmission solenoid issues, transfer case chain stretch/wear.
Suspension Steering Common Problems:
Worn control arm bushings, leaky steering gearbox, worn ball joints, death wobble (can be caused by worn track bar, ball joints, tie rod ends, steering stabilizer).
Electrical Common Problems:
Corroded wiring harnesses (especially in off-road/wet conditions), intermittent gauge issues, starter/alternator failure.
Body Common Problems:
Rust in common areas (fender flares, rocker panels, tailgate), leaks around windshield and soft top seals.
Brand Legacy:
Jeep has a storied history dating back to WWII, known for its rugged, go-anywhere capability.
Tj Introduction:
The TJ Wrangler was introduced for the 1997 model year, replacing the aging YJ generation. It marked a significant shift with the return to coil springs for the suspension.
Tj Key Changes From Yj:
Coil spring suspension (4-link front, 5-link rear), improved interior and exterior styling, return to round headlights, introduction of OBD-II diagnostics.
Manufacturing Plant:
Toledo South Assembly Plant, Toledo, Ohio, USA
Production Years Tj Range:
1997-2006
1996 Model Year Context:
While the TJ launched as a 1997 model, some early production or pre-production models might have carried a 1996 designation, or the manual covers transitional elements from the YJ to TJ.